Openai 4o-mini fine-tuned model not responding

API Bugs
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Openai 4o-mini finetune model not responding suddenly from 14th Nov.

Error processing batch 1: Error code: 500 - {‘error’: {‘message’: ‘The server had an error while processing your request. Sorry about that!’, ‘type’: ‘server_error’, ‘param’: None, ‘code’: None}}

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For the sake of anyone that could actually fix a problem:

  • Is this happening for one fine-tuning model, or do you have multiple “ft:o4-mini” that you can test.
  • Can you succeed with a basic or identical call to Responses or Chat Completions?
  • did you write the model name parameter without the error seen in this title?

Then, you hint but don’t describe:

  • if you are using batch: Details about the endpoint specified.
  • Can you run the batch file against the base model and it will start instead of an immediate API return failure (proving a good file)? (you can cancel after a kick-off).

At present, there’s several batch issues that are continuing, hangs without running to completion, but not your case of a status 500 from the job create.